noun
- simple plants without true stems, leaves, or roots that live in water or moist places
Usage: plural form; singular is alga
Examples
- Green algae covered the surface of the pond.
- The aquarium walls were coated with brown algae.
- Marine algae provide oxygen for ocean ecosystems.
- Scientists study algae as a potential source of biofuel.
- The swimming pool turned green due to algae growth.
- Microscopic algae form the base of many food chains.